package com.itheima.method;

public class MethodDemo6 {
    public static void main(String[] args) {
        int num =100;
        System.out.println("调用方法前:"+num);
        change(num);
        System.out.println("调用方法后:"+num);
    }
    public static void change(int num){
        num = 200;
    }
}
